Can I use playMGM poker account to access playMGM casino and vice versa?

Yes, your MGM online gaming account is able to login and play on both playMGMpoker & playMGMcasino. You can even play some casino and table games within the playMGMpoker client and access poker from within the playMGMcasino client. However to get the best playing experience, you should log in separately to either playMGMcasino or playMGMpoker according to your preference as some games, features and services may not be available in cross play.